Early and prolonged antiretroviral therapy is associated with an HIV-1-specific T-cell profile comparable to that of long-term non-progressors.

Early and prolonged antiretroviral therapy is associated with an HIV-1-specific T-cell profile comparable to that of long-term non-progressors.
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DOI:
10.1371/journal.pone.0018164
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发表时间:
2011-04-05
期刊:
影响因子:
3.7
通讯作者:
Kinloch-de Loes S
Kinloch-de Loes S
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Cellerai C;Harari A;Stauss H;Yerly S;Geretti AM;Carroll A;Yee T;Ainsworth J;Williams I;Sweeney J;Freedman A;Johnson M;Pantaleo G;Kinloch-de Loes S

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在 HIV-1 血清转化时进行抗逆转录病毒治疗 (ART) 干预和控制病毒复制可能会减少累积的免疫损伤。因此,我们假设,在 HIV-1 血清转化者中长期维持 ART 可能会诱导类似于 HIV-1 长期非进展者 (LTNP) 的免疫病毒学状态。我们研究了一组接受长期 ART (LTTS) 治疗的 20 名 HIV-1 血清转化者,并将其与 15 名 LTNP 中的一个进行了比较。分别通过细胞相关的 HIV-1 RNA 和 DNA 测量,两个队列中的残留病毒复制和外周血储存库均同样较低。然后,通过多色流式细胞术,分别使用 IFN-γ、IL-2、TNF-α 产生和穿孔素表达,对这两个病毒学匹配的队列进行全面分析,以了解 HIV-1 特异性 CD4+ 和 CD8+ T 细胞功能谱,包括细胞因子产生和细胞毒能力。在 LTTS 和 LTNP 中发现了相当水平的高度多功能 HIV-1 特异性 CD4+ 和 CD8+ T 细胞,HIV-1 特异性 CD8+ T 细胞上穿孔素表达较低,这与低病毒负荷背景下的多功能/非细胞毒性特征一致。我们的结果表明,在 HIV-1 血清转化时开始的延长 ART 与类似于 LTNP 的免疫病毒学特征相关,这强化了最近对早期治疗开始的积极影响的强调,并为治疗中断后进一步采取干预措施促进病毒学控制铺平了道路。
Intervention with antiretroviral treatment (ART) and control of viral replication at the time of HIV-1 seroconversion may curtail cumulative immunological damage. We have therefore hypothesized that ART maintenance over a very prolonged period in HIV-1 seroconverters could induce an immuno-virological status similar to that of HIV-1 long-term non-progressors (LTNPs). We have investigated a cohort of 20 HIV-1 seroconverters on long-term ART (LTTS) and compared it to one of 15 LTNPs. Residual viral replication and reservoirs in peripheral blood, as measured by cell-associated HIV-1 RNA and DNA, respectively, were demonstrated to be similarly low in both cohorts. These two virologically matched cohorts were then comprehensively analysed by polychromatic flow cytometry for HIV-1-specific CD4+ and CD8+ T-cell functional profile in terms of cytokine production and cytotoxic capacity using IFN-γ, IL-2, TNF-α production and perforin expression, respectively. Comparable levels of highly polyfunctional HIV-1-specific CD4+ and CD8+ T-cells were found in LTTS and LTNPs, with low perforin expression on HIV-1-specific CD8+ T-cells, consistent with a polyfunctional/non-cytotoxic profile in a context of low viral burden. Our results indicate that prolonged ART initiated at the time of HIV-1 seroconversion is associated with immuno-virological features which resemble those of LTNPs, strengthening the recent emphasis on the positive impact of early treatment initiation and paving the way for further interventions to promote virological control after treatment interruption.
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